Mold for glass-blowing machines.



BQ 1.011111118111111. MOLDv FOR GLASS BLOWING MACHNES.

1,156,058. 1 Patented 001.12, 1915.

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` y Sigg APPLICATION'-FILED APR. 20, 1911.

/NVE TOR n. CHAMBERLIN. MOLD FOR GLASS BLowlNG MACHINES.4 l

l APPUCATIQN FILED- APRZ, 1911. Y 5

Y Patented 00t.12, 1915.

3 SHEETS-SHEET 2.

E D CHAMBERLIN v MOLD FOR GLASS BL0W|NG|l MACHINES.

I APPLxcATloN man Amr'zo, 1911. Ll. Patented 06u12, 1915.

3 'SHEETS-SHEET e,`

Tun s BENJAMIN DAY CHAMBERLIN, 0F CORNING, NW YORK, ASS-IGNOR TO EMPlRE n MACHINE COMPANY, OF PORTLAND, MAINE, A CORPORATION 0F MANE.

MOLD FOR GLASS-BLOWING MACHINES. Y

Specication of Letters Patent.

Patented Oct. 12, i915.,

Application filed April 20, 1911. Serial No, 622,391.

Improvements in Molds for Glass-Blowing Machines, of which the following 1s a speciy cation.

My invention has for its object to provide Aa construction forblowing molds such as will insure accuracy and smoothness of their action, a minimum of power to'operate them, and simplicity of construction, the operation to be performed being -a closing and openingof the mold, a dropping ofthe mold to permit the cooling of the same by a water bath and the restoration of the mold to its normal position. For this purpose it consists essentially of a horizontally journaled frame, having a knuckle upon which the mold parts are pivoted and carrying the mold opening and closing mechanism. Thus the molds and their actuating mechanism all rotate together around the axis of the frame so that such parts are self contained and may be removed from and replaced as a whole, in any appropriate blowingmachine, such for instance as that shown by me in my other application filed 13th day of' January, 1911, Serial No. 602,532, Patent No. 1,124,698, issued Jan. 12, 1915.

My invention further consists of means whereby the mold proper may be readily removed from or replaced in the mold mechanism, (whereby the same mechanism may be used in connection with molds of various shapes), and for this purpose it consists in hinge members separate and distinct from the mold proper and of means for readily and firmly securing them together and in its preferred form it further consists in means whereby the mold halves may be adjusted on their hinges to accommodate blow-pipes of various lengths.

Referring to the accompanying drawings in which corresponding parts are designated by corresponding marks of reference, Figure 1 1s a side elevation of a mold mechanism constructed in accordance with thisA invention and showing in full and dotted mold hinges. F ig. 3 is a plan view partly in section of the knuckle frame. Fig.- i .is an end view thereof. Fig. 5 is a front view of a vertical half section on line of Fig. 2. Fig. 6 is a perspective view of a structure embodying a mold actuating mech- "anism constructed in accordance with this invention, and showing a different form of connection between the mold and mold hinges, a mold for a different article being shown. Fig. 7 is a side elevation of the structure shown` in Fig. 6.

The trunnion 1a of the knuckle frame 1 is horizontally journaled in the base 2 of a blowing machine, and is provided with a segmental pinion lb adapted to be engaged bythe segmental rack 2, forming a part of the blowing machine, whereby the knuckle frame can be given angular' movement around its horizontal aXis as it is fully disclosed in my said prior application, thisl being for the purpose of dipping the mold. The outer end of the trunnion has projecting;r forwardly therefrom the knuckle lC and has in the rearthereof the cross bar 1d, which unites and supports the lower ends of the vertical legs of a yoke lever 1".' By preference these parts are all formed integral except the segmental pinion 1b.

Straddling the knuckle 1c are the top and bottom plates 3a and 4", and 3b and ab, respectively, of the two mold hinges respectively, the hinges also straddling each other as shown in Fig. 1, The hinges carrying the mold halves' and 4 are pivoted upon the knuckle by the pin 5, 'which is at right angles to the trunnion 1a. The up'per plates 3 and a of the mold hinges have ears 3k and 4 projecting rearwardly therefrom, such projections being upon opposite sides of the front vertical leg of the yoke 1. These ears are connected to the forward ends of links 3m and 4, the rear ends of which are pivoted to the opposite ends of the cross-v head (i located behind the rear vertical legof the yoke 1e, and carried on the rear end of a har 7 mounted to slide at right angles to the trunnion and the pivot of the mold, in lbearings in the lower ends of the said yeke. this construction the rearward movement of the cross-head will result in the closing' of the mold, dueto the fact that the ears 3k and il are upon the opposite sides of the pivotal point from the mold halfl to which they are connected. The sliding bar is actuated by means of a shaft 8 mounted in the top of the yoke parallel with the trunnion, the shaft having upon its outer end a crank 8a, carrying a rearwardly projecting 'y spring 8b bearing upon the front face of the collar 7C rigidly fixed upon a rod 7. The

shaft has upon its inner end an actuating crank 8C carrying a roller S which is moved by a suitable part of a blowing machine, such as the cam 2, which is fully described in my prior application. lt will be seen y that vthe depression of the roller Sd by the cam 2b will result in a rearward movement 'of the cross-head' and the closing of the -nected to the bracket 9a projecting rearwardly fromthe yoke. This-spring serves to hold the roller 8 up toward the cam, and when, in the rotation of the cam, the cutaway portion 2d thereof comes opposite the roller, to open the mold.

'In Figs. -1 to 5 l have shown a connec tion between the mold halves and mold I part having a' circular flange lllL thereon hinges by which not only can mold halves be interchanged on the hinges, but they 'can be varied in elevation thereon to accommo date blow-pipes of diEei-ent lengths. ln these figures the front ends of the mold hinged plates 3u and 3b and la and lll), are connectedby vertical webs l() which have machined inner opposing faces lOn. The mold halves 3 and 4 may be each cast'in two pieces divided horizontally at 11,*each around its abutting face, by which the parts may be fastened together.l 2li web l2 is formed on the upper part of each mold half,

projecting laterally therefrom and projecting downwardly to near the level of the base of the mold, the vertical faces 12a, 12b and 12C of the web being machined. The lateral face 12a of eacli'web 12 fits against the machinedface l0a ofthe web l0 of the corresponding mold hinge, and the mold half is held in position by clamp bolts `r10b and 10c passing through the web l0, the heads of which bolts bear against the faces 12b .and 12 of the mold web. By their construction not only can the molds be readily interchanged on the n1oldsupports,-bu`t the molds may be shifted vertically as may be necessitated by the length of the blow irons employed.

ln Figs. 6 and 7 l have shown aV form of connection between the .mold hinges and noldsvhich while it does not permit variation of elevation of a mold permits the interchanging of the mold parts. 'ln these figures the upper and lower plates of each hinge are connected in front of the knuckle by means of a transverse web, the web for' the hinge of the mold half 3 being shown (Fig. 7) and terminating at its lower edge in the forwardly projecting flange 3, and having a groove in its upper face, forniing a' tongue 3C. The hinge of the mold half 4.- is of the same general construction. rl`he mold halves 3 and l are of the desired internal contour and each has upon its rear face a bracket 3f, the bottom flange of which is adapted to rest nponthe flange 3d, while its upper 'flange is provided with a tongue 3g, adapted to engage the vcorresponding tongue 3e of the vertical member of the corresponding hinge part, whereby the molds willv be supported. For the purpose of locking the molds firmly to their hinge parts taper pins 3 may be employed.

Having thus described myinvention what l claim and desire to secure by Letters Pat ent is:

l. ln a mold for a glass blowing machine, the combination of a mold support mounted to turn about an axisgfor dipping the mold, mold parts pivoted upon the said support at right angles to the axis thereof, a bar sliding inthe support at right angles to the axes of the supportand of the mold and connected to the mold parts, a shaft i ounted in the support parallel to the axis Lof the support, and a connection between itlle said shaft and gar for controlling the movement of the said 2. ln a mold for a glass blowing machine,

the combination of a mold support mounted to turn about a horizontal axis for dipping the mold, andrhaving upon its end a knuckle upon one si e of its axis and a yoke upon its opposite side, mold parts pivoted on the knuckle at right angles to the axis of the support, a bar slidingly mounted in the yoke, means for actuating the said bar and a con nection between the bar and mold parts for controlling the opening and closing of the mold.

` 3. ln a mold for a glass blowing machine, the combination of a mold support mounted to turn about a horizontal axis for dipping the mold and having upon its end a knuckle upon one side of its axis Aand a yoke upon its oppositeside, mold parts pivQtedon the knuckle at right angles td the axis of the support, a bar sliding in the yoke at right angles to the axis thereof and of the mold parts, a connection` between the said bar and mold parts, a shaft mounted in the yoke parallel to the axis of the support, and a connection between the shaft and bar to actuate the sliding bar and' means for oscillating the shaft.

. ll. ln a mold for a glass blowingmachine, the combination of a mold support mounted lil@ to turn about a horizontal axis for dipping the mold and having upon its end a knuckle upon one side of its axis anda yoke upon its opposite side, mold parts pivoted on the knuckle at right angles to the axis of the support, a bar slidingly mounted in the yoke, a cross-head mounted on the said b'ar and connected to the mold parts, a shaft mounted in the yoke parallel to the axis of said support and having on one end thereof:Y an arm adapted to actuate the bar to control the opening and closing movements of the mold, and another arm upon the opposite end thereof by which it may be actuated.

5. In a mold for a glass blowing machine the combination of a mold support mounted to turn about a horizontal axis for dipping the mold and having upon its end a knuckle upon one side of its axis and a yoke upon its opposite side, mold parts pivoted on the knuckle at right angles to the axis of the support, a bar slidingly mounted in the yoke, a cross-head mounted on the said bar and connected to the mold parts, a sha-ft mounted in the yoke parallel to the axis thereof and having on one end thereof an arm adapted to actuate the bar to controlV the opening and closingn movements of the mold and another arm upon the opposite end thereof by which it may be actuated, a spring interposed between the first named arm and the bar and through which the mold is closed, and aspring connected to the last named arm for opening the mold.

In testimony whereof I have signed my name in the presence of two Witnesses.

BENJAMIN DAY CHAMBERLIN. Witnesses:

' G. WILLIS BRAKE,

R. H.1 CURTIS. 

